Voting underway in Northern Ireland Assembly election

 

Voting is underway in the Northern Ireland Assembly election.

It's the second poll in less than a year and follows the collapse of power-sharing in January.

90 seats are being contested with the major parties - the Democratic Unionist Party and Sinn Féin - likely to be the big winners once again.

Belfast based correspondent Alan Murray says Sinn Féin will be hoping to build on its success from last time round: